If I want to do wireless communication, I only know three types: Bluetooth, infrared, and NRF2401 wireless. However, I have only done infrared, and the distance is not ideal. I would like to ask if an...
The circuit was originally completed, but it needs to be modified because of the high power consumption. I planned to use a 5V single power supply to power the LM324, but found that the distortion was...
Beijing UFIDA Technology Co., Ltd. is urgently looking for talents in circuits. The job location is Alcatel, Pudong, Shanghai. I hope that friends who are interested can contact me. Because the projec...
Write a matrix keyboard driver in wince. (7 rows * 6 columns) Matrix keyboard, lead out 13 wires, the GPIO connected to the 6 columns is set as the external interrupt port, and the GPIO direction conn...